<?php
//上传图片代码
// upload.php
echo <<<_END
<html><head><title>PHP Form Upload</title></head><body>
<form method='post' action='upload2.php' enctype='multipart/form-data'>
Select a JPG, GIF, PNG or TIF File:
<input type='file' name='filename' size='10' />
<input type='submit' value='Upload' /></form>
_END;
if ($_FILES)
{
    $name = $_FILES['filename']['name'];
    switch($_FILES['filename']['type'])
    {
        case 'image/jpeg': $ext = 'jpg'; break;
        case 'image/gif': $ext = 'gif'; break;
        case 'image/png': $ext = 'png'; break;
        case 'image/tiff': $ext = 'tif'; break;
        default: $ext = ''; break;
    }
    if ($ext)
    {
        $n = "image.$ext";
        move_uploaded_file($_FILES['filename']['tmp_name'], $n);
        echo "Uploaded image '$name' as '$n':<br />";
        echo "<img src='$n' />";
    }
    else echo "'$name' is not an accepted image file";
}
else echo "No image has been uploaded";
echo "</body></html>";